PHP - 将字符串拆分为多维数组的无环方法

Without you actually doing the looping part, something based on array_map + explode should do the trick ; for instance, considering you are using PHP 5.3 :

$str = "A,5|B,3|C,8";

$a = array_map(
    function ($substr) {
        return explode(',', $substr);
    }, 
    explode('|', $str)
);
var_dump($a);

会得到你:

array
  0 => 
    array
      0 => string 'A' (length=1)
      1 => string '5' (length=1)
  1 => 
    array
      0 => string 'B' (length=1)
      1 => string '3' (length=1)
  2 => 
    array
      0 => string 'C' (length=1)
      1 => string '8' (length=1)

当然，这部分代码可以重写为不使用 lambda 函数，并使用 PHP <5.3 -- 但没那么有趣^^

Of course, this portion of code could be re-written to not use a lambda-function, and work with PHP < 5.3 -- but not as fun ^^

尽管如此，我认为 array_map 将遍历 explode 返回的数组的每个元素......所以，即使循环不在你的代码中，仍然会有一个...

Still, I presume array_map will loop over each element of the array returned by explode... So, even if the loop is not in your code, there will still be one...

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